Re-fuel action camera rechargeable battery for the GoPro Hero4 Black and Silver Editions. Amazing run time on these replacement batteries for the GoPro Hero 4 Black Edition and GoPro Hero 4 Silver Edition cameras. You get two 90 minute rechargeable batteries that replaces the AHDBT-401 battery that comes with the GoPro 4 Black and Silver action cameras. These batteries are 100% compatible with the GoPro Hero 4 action cameras. Premium lithium-ion cell battery. These are a great GoPro accessory to go along with your favorite Hero 4 action camera.